"3DMark 2000 and Quake 3 were used to compare the relative difference in
performance under Windows OpenGL and Direct 3D respectively... The overall
improvement in performance were small, but since using VGABIOS provides
little risk of you rendering your card unusable, hard core fans may use it
for reasons of curiosity ."

FULL STORY @ TECH JUNKIE(http://www.tech-junkie.com/articles/2000q2/nvidiabios/)